I need a manual or information about the model DB2-B755-3A

It may not be threaded right , that is the most common reason here is a video on how to thread it Threading Brother DB2 B735 Industrial Sewing Machine Sewing Various Stitch...

Brother has manuals for most of their equipment on their support page. The DB2-B736 manuals are here: http://www.brother-usa.com/support/ModelInfo.aspx?R3ModelID=B736%20%20003#.U211q2SFr3g . The direct link to the user's manual is http://www.brother-usa.com/VirData/Content/en-US%5CIPD%5CConsumer%5CInstructionManual%5CIM_DB2_B736_EN_7235.PDF .
I hope this helps.

Cindy Wells

Here is the best advise any professional sewing machine mechanic can offer given the information you supplied.

You set your Brother industrial db2-b737-403 by turning assorted wheels, knobs and levers.

You can go to www.brother-usa.com and look for your model but I saw only similar as in DB2-774 and a couple of others under the industrial machines. Maybe they will be close enought to answer your questions. They are free to download, if that doesn't work call Brother at 1-877-276-8437 and I am sure that they can help you locate one. Good luck, you have to wait until Monday to call them.

you can asked only the manual of your machine, to the store of brother sewing machine.

Could not find the manual for this number, but this one may work, or you can contact Brother.

http://www.brother-usa.com/manuals/default.aspx?PGID=17&R3ModelID=B797++005

Go to brother.com . From there you will need to enter the model number and serial number to get the file for free good luck

Manual here........


http://myweb.tiscali.co.uk/stitches/BROTHER-DB2-B755-MKIII-MANUAL.pdf

I have the manual in pdf form here

http://myweb.tiscali.co.uk/stitches/BROTHER-DB2-B755-MKIII-MANUAL.pdf